hi guys
ijust bought a cobalt ss/sc and i think it might have been modded a little bit
the psi gauge reaches about 15 psi and i'd like to know if it's normal
thanks

 

12 is stock.

 

pop the hood look at the pulley... does it have bolts or is it pressed on

 

12.5 is stock. sounds modded. what size pulley?

 

theres alot of variables that can cause increase psi

 

I bet you have a stage 2 kit installed. The pulley on the supercharger will have 4 blue bolts on it if it is on the stage 2 pulley. I have stage 2 and reach 15 with no other mods

 

could be many things. either it's not stock, or has a restriction somewhere, most likely in the cat. But like said, easiest way is to take a look at the supercharger pulley. If you're not sure what it's supposed to look like, post a picture an we'll tell you if it's stock.

 

i've verifie and the pulley is press on
the guy who had the car before had instale an autometer mecanical boost gages
so i'm pretty sure that it's the right psi

i'll post pictures in a day

 

You've seen the stock gauge is made by Autometer too right?

 

You missed the part where he said "mechanical" Not electric.

 

[IMG]DSC00728[/IMG][IMG]DSC00727[/IMG]
i just add som pic of my car on my profil so check out

 

check your url
thats not correct :p

 

Nope .... I saw that, I was just covering all the bases ...... You never know now a days what people will say when selling their used car....... Been around long enough to know that the boost gauges in these car's isn't mechanical .

 

sorry i dont know how to put pics in my message

but you can look in my profile

 

Clogged cat in combination with an aftermarket intake is my guess.

 

not an aftermarket intake, look at his gallery. how does the car feel? is it cutting out or feel like its choking up top?

 

here's a link ti some pics

https://www.cobaltss.net/gallery/sho...3&userid=50976

https://www.cobaltss.net/gallery/sho...3&userid=50976

 

looks like a stock pulley. A pic of the guage would help us in backing uo ur saying that it is a mechanical guage. We dont know ur mechanical knowledge so are still assuming that u could be wrong about the guage.
Guage could not be calibrated right and the cat could be getting clogged.

 

dont worry about my mecanical skills i know my thing

the gages is really mecanical it's a autometer ultralite series #4303

 

then why make this thread?

 

12 to 12.5 is stock so you could be right it very well could have been modded

 

i dont know the exact number im boosting i know my guage in 2-3 hits the middle bold line in between 15 and 20..lol